Anatomy & Physiology Gastrointestinal #5

Question

Which is the path for which fluids and food move through the gastrointestinal (GI) tract?

Answers

  1. Mouth, esophagus, pharynx, stomach, small intestine, large intestine, rectum
    • Rationale:

      The second and third sequence of events noted here are incorrect as once food enters the body through the mouth it moves to the pharynx and then the esophagus not to the esophagus to the pharynx; therefore, this is not the path for which fluids and food move through the gastrointestinal (GI) tract.

  2. Mouth, pharynx, esophagus, stomach, large intestine, small intestine, rectum
    • Rationale:

      The fifth and sixth sequence of events noted here are incorrect as once food leaves the stomach it enters the small intestine and then the large intestine not the reverse noted here; therefore, this is not the path for which fluids and food move through the gastrointestinal (GI) tract.

  3. Mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum
    • Rationale:

      This is the correct sequence through which fluids and foods travel through the GI tract for mastication, digestion, absorption, and defecation to occur.

  4. Mouth, pharynx, stomach, esophagus, large intestine, small intestine, rectum
    • Rationale:

      While this sequence of how fluids and food move through the GI tract begin and end as expected, the steps between these are incorrectly stated. The sequence begins in the mouth, moves to the pharynx and esophagus before reaching the stomach – from this location, food enters the small intestine, large intestine, and finally the rectum.

Overview

The digestive system, without the accessory organs of digestion, is a continuous hollow tube that begins at the mouth and ends at the rectum.

Explanation

Learning Outcomes

The digestive system has both an upper and lower tract. Each portion of these tracts performs a different function and role in the body. Ingested fluids and foods move through the alimentary tract in the sequence that follows:
Mouth
Pharynx
Esophagus
Stomach
Small intestine
Large intestine
Rectum.

Test Taking Tip

Think about the structures of the GI tract when determining the route in which substances travel through the digestive process.

Video Rationale